Loom shuttle



H. E. GOFF LOOM SHUTTLE May 11, 1937.

Filed Jan. 30, 1936 Patented May l1, i937 UNlTED STATES PATENT 'OFFICE LooM SHUTTLE Application January 30, 1936, Serial No. 61,451

1 Claim.

This invention relates to loom shuttles and involves the provision of a cop or bobbin holding means of a character adapted to permit the ready insertion or removal of the cop without injury 5 thereto and which provides a xed holding means for preventing longitudinal movement of the cop upon the spindle when in operative position within the shuttle.

One object of the invention is the provision of m a device of this character which provides a uniform contact with the cop member adjacent both sides thereof and which is not subject to displacement through wear or otherwise as is the case with means heretofore employed for this purpose.

Another object of this invention is the provsion of means of this character shaped to permit the insertion of a cop member within the shuttle or its removal therefrom without abrasion of or injury to any portion thereof, but which is capable of engaging one side of the base or ilange portion of a cop throughout a considerable portion of its extent when the cop is in place within the shuttle to insure permanence in the location of the 'cop member relative to the spindle while in operative position within the shuttle body.

Other objects and advantages of the invention relate to various improved details of construction and novel arrangements of the parts as. will be more fully set forth in the detailed descripn@ tion to follow.

Referring to the drawing:-

Fig, 1 is a top plan view of a loom shuttle, showing the positions of the cop and spindle when in normal operating relation with the shuttle, and

35 illustrating the holding member in its location with respect to the base flange or rib carried by the cop,

Fig. 2 is a longitudinal sectional view of the structure, taken substantially along the line 2-2 40 of Fig. l, and showing the spindle and cop in raised or dong position,

Fig. 3 is a transverse sectional view, taken substantially along the line 3--3 of Fig. 1, and showing the holding member in its relation with the cop and spindle when the parts are in their normal operating positions,

Fig. 4 is a rear elevational view of the cop holdling member, and

Fig. 5 isl a side elevational view of the same.

It has been the practice generally heretofore to ,employ spaced lateral plates, usually supported by the spindle axle or supporting pin and extending forwardly on either side of the base of the bob- .bin, for holding the bobbin against movement longitudinally of the spindle in the normal operating position of the parts. This has been accomplished by providing inturned jaws at the forward ends of the lateral plates which engage the enlarged base of the cop or bobbin to hold it securely in place on the spindle. These lateral plates are found to develop considerable Wear when in use, particularly at their points of connection with the spindle axle or pin, whereby they move longitudinally of the shuttle body so that the jaws work out of alignment With each other transversely of the shuttle and no longer hold the cop or bobbin firmly and with equal pressure on each side. This looseness of the plates may in fact result in only one of the plates engaging the base portion of the cop or bobbin, or may cause abrasion or injury to the base of the cop or bobbin when inserted in the shuttle. Moreover, in the case of special bobbins or cops formed of light material and having a narrow base flange of thin metal, such holding jaws, after becoming worn,

are not located with sucient accuracy as to their transverse alignment to either hold the cops properly or to prevent injury thereto when inserted in the shuttle.

In order to overcome these difficulties and provide a structure wherein the base flange of the cop will be positively and uniformly engaged throughout a considerable portion of its extent as well as to prevent abrasion or cutting of the base ange upon insertion within or removal from the shuttle I have provided the means shown and described herein, which is illustrated in connection with a general shuttle structure of more or less conventional form.

In the accompanying drawing, l designates generally a shuttle body provided with a spindle opening 2, and having a spindle 3, the base portion 4 of which is pivotally supported by a spindle axle or pin 5, so that the heel portion 6 may be engaged by one end of a spring plate 'l to retain the spindle in either its downturned operating position within the shuttle or its upturned doiling position. The spring plate 1 is secured in place upon the shuttle by means of the usual holding screw 8.

A cop or bobbin l is adapted to be positioned upon or removed from the spindle 3, and in the present case the cop lll is formed of a relatively light material, such as paper or the like, and is provided with a base portion Il terminating in a relatively narrow externally projecting flange or rib l2, which may be formed. from thin metal or other suitable material.

Recesses I5 are formed in opposite sides of the shuttle body at points adjacent to the base of the spindle opening and a holder member I6 is inserted in the recesses I5. The holder member I is provided upon its upper side with a recess II for receiving the base of the cop I0, and has an outturned base lug I9 Aover which a pin 20 is inserted, as shown in Fig. 2, to retain the holder member securely in position within the shuttle body. The recess I I in the plate I6 is so formed as to provide a rounded lower edge 2| in the holder plate and upstanding arms 22 located upon opposite sides of the plane of movement of the spindle. In the formation of this recess the lower portion is made of such size that the rounded lower edge 2l ts substantially about the base of the cop adjacent to the ange or rib I2 when the parts are in their normal operating positions within the spindle body. The upper portion of the recess I'I is formed of greater width than the lower portion thereof by 1n- .clining the inner edges of the arms 22, as indicated at Y23, upwardly from a point 24 which may be-located at or somewhat above the hori- Zontal plane of the longitudinal axis of the spindle when the same is in its normal operating position. This form of the recess enables the cop to swing down into the shuttle or up into doing position without striking the flange I2 on the edges of the upstanding arms 22, whereby the abrasion of the flange I2 or its injury through striking the holding plate either during its insertion within or removal from the shuttle is overcome, with consequent protection both of the-relatively fragile flange I2 as well as portions of the plate I 6 against undue wear.

The present form of holder plate provides a considerably increased bearing area for the flange .or base portion of a cop than those heretofore employed, while at the same time this bearing area is uniformly positioned at all times relative to the base or flange portion of the cop and serves to retain uniformly each side of the cop in the desired position relative to the spindle. By reason of the fact that the holder member is secured in place forwardly of and located inde- Apendently of the spindle pin and out of engagement with any moving parts, such as the base of the spindle, it does not become subject to such wear as would cause it to move out of its proper holding position.

The bobbin holding member I6 may be employed with various diierent forms of cops for engaging an enlarged base or outwardly extending flange tchold the cop securely in place by engaging each side substantially uniformly, and the shape of the holding member is such that in any case the enlarged base or outwardly extending flange of the cop or bobbin is movable into o-r out of operative engagement with the holding member without being cut or injured through striking parts of the holding member.

It will be understood also that various different combinations and arrangements of parts may be employed for retaining the spindle in operative position within the shuttle or in tilted dofing position without varying the effectiveness of the bobbin holding member.

What I claim is:-

A loom shuttle structure comprising a pivotally mounted spindle member for supporting a bobbin in normal operating position within the shuttle or in dofiing position relative thereto, and means permitting the application of and for retaining against substantial longitudinal movement on the spindle a bobbin provided with a Ynarrow base iiange having its outwardly extending sides substantially at right angles to the axis of the spindle comprising a holding member carried by the shuttle body and having spaced arms provided Wtih outwardly inclined portions defining a two-diametered recess therebetween the inner portion of which recess is of substantially the same diameter as the bobbin at a point adjacent to the base ange and the outer portion of which recess is of a diameter intermediate the diameter of the bobbin adjacent to the base flange and the diameter of said base ange, whereby the base ilange of said bobbin may pass angularly through the enlarged portion of the recess in the dofng position of the spindle and be in substantial engagement with that portion of the holding member adjacent to the inner portion of the recess in the operating position of the spindle.

HAROLD E. GOFF. 

